JP5197093B2 - Empty bag supply method and empty bag supply device - Google Patents

Abstract

An empty bag supply method and empty bag supply device (8) in which a first suction-hold member suction-holds a bag (4) set horizontally in a conveyor magazine (7a) and the first suction-hold member (26) is swung upward so as to raise the front end of the bag (4), a grip member (31) grips a portion near the front end of the raised bag (4) and suction-holding of the bag by the first suction-hold member (26) is released, the grip member (31) is swung upward and the bag (4) is thus moved up while being changed into a substantially vertical attitude, a second suction-hold member (44, 45) suction-holds the front-side surface of the bag (4) in the substantially vertical attitude and the grip member (31) opens to release the bag (4); and when the grip member (31) thus opens, unwanted bag(s) adhering to the suction-held bag (4) is dropped, and only the bag (4) suction-held by the second suction-hold member (44, 45) is moved horizontally onto a bag support member (3).

Description

  The present invention provides an empty bag supply method for sequentially supplying empty bags loaded and accommodated in a bag supply magazine in a substantially horizontal state to a processing apparatus such as a bag filling and packaging machine or a spout-equipped bag manufacturing apparatus (spout attachment machine). And an empty bag supply device.

As shown in Patent Documents 1 to 4, empty bags loaded and stored in a bag supply magazine (including a state in which the upper bag is shifted and stacked vertically so that the upper bag comes to the front side like a conveyor magazine type bag supply device) It is well known that one sheet is taken out from the uppermost empty bag one by one and supplied to a bagging and packaging machine or a spouted bag manufacturing apparatus.
In this case, when the empty bag group loaded and accommodated in the bag supply magazine is in a close contact state due to static electricity or the like, when the uppermost empty bag is sucked and held with a suction cup, the empty bag underneath is removed. There may be a problem (hereinafter simply referred to as “multiple-sheet feeding”) in which (one or a plurality of sheets) are also taken out and supplied to a bagging and packaging machine or a spouted bag manufacturing apparatus as it is.

  In order to prevent this supply of multiple sheets, in Patent Document 1, a resistor that contacts an empty bag lifted by a suction cup is installed above both side walls of the bag supply magazine, and the second and subsequent sheets lifted together. In Japanese Patent Application Laid-Open No. 2004-228688, the top end of the top empty bag is adsorbed while the center of the empty bag is lightly held by the positioning bar, and the suction cup is turned slightly. After moving, the tip side of the empty bag is slightly turned to allow air to flow between the uppermost empty bag and the second empty bag, and then the suction cup is lifted upward.

Utility Model Registration No. 2588135 Japanese Patent No. 3084539 JP 2006-36325 A JP 2006-224546 A

All of the above measures try to separate the lower bag when the uppermost empty bag in the bag supply magazine is picked up by the suction cup and taken out upward, but speeding up of the device is desired. Recently, as a result of shortening the time for taking out the empty bag, it is not much expected to obtain a separation effect.
On the other hand, when the suction cup is also used as the transfer means for receiving the empty bag from the suction cup for taking out the empty bag from the bag supply magazine and transferring it to a predetermined position (see Patent Document 3), Air flows between the upper empty bag) and the empty bag (the second and subsequent empty bags) that are in close contact with them, and the two can be separated and the second and subsequent empty bags can be expected to fall. However, it is not possible to know where the empty bag falls, and depending on the location of the drop, there may be a problem in taking out the next empty bag.

  The present invention has been made in view of such problems of the prior art, and takes out the uppermost empty bag from an empty bag group loaded and accommodated in a substantially horizontal posture in a bag supply magazine, When supplying to a spouted bag manufacturing apparatus, the main purpose is to prevent supply of multiple sheets. Another object is to prevent the fall of the second and subsequent empty bags from interfering with the next bag supply when multiple sheets are taken.

In the empty bag supply method according to the present invention, after the upper surface of the uppermost empty bag in the bag supply magazine near the front end in the supply direction is adsorbed by the first adsorbing member, the first adsorbing member is moved upward to move the empty bag. Lifting the bag, holding the vicinity of the front end of the lifted empty bag with a holding member, moving the holding member to transfer the empty bag to a predetermined position, and changing to a substantially vertical posture, the empty bag in a substantially vertical posture After adsorbing only the front surface in the supply direction with the second adsorbing member, the second adsorbing member is moved to transfer the empty bag to a predetermined position and delivered to an adjacent processing apparatus.

  The empty bag supply method includes a case where the empty bag is changed from a substantially vertical posture to a substantially horizontal posture when the second adsorbing member is moved to transfer the empty bag to a predetermined position. In this case, there are a plurality of the second adsorbing members attached to one empty bag, and the second adsorbing member adsorbs at least two upper and lower portions on the front surface in the supply direction of the empty bag, It is desirable to keep the posture stable. In a typical example, the empty bag is placed in the bag supply magazine with the bag mouth side or the bag bottom side facing the supply direction, and when the empty bag is changed to a substantially horizontal posture, the empty bag is in a substantially vertical posture. The lower side of the empty bag is directed to the front side in the supply direction, whereby the direction of the bag mouth side and the bag bottom side of the empty bag is reversed from that in the bag supply magazine.

The empty bag supply device according to the present invention reciprocates between a first receiving position below and a first delivery position set above the first receiving position, and supplies the uppermost empty bag in the bag supply magazine at the first receiving position. A first adsorbing member that adsorbs the upper surface near the front end in the direction and lifts the adsorbed empty bag at the first delivery position, and a first adsorbing member that causes the first adsorbing member to reciprocate between the two positions The reciprocating movement between the moving mechanism and the second receiving position and the second delivery position is performed, and the holding surface is changed from the substantially horizontal state to the substantially vertical state while moving from the second receiving position to the second delivery position. A holding member that holds the vicinity of the front end of the empty bag adsorbed by the first adsorbing member at the first delivery position at the receiving position and suspends the empty bag held at the second delivery position in a substantially vertical posture; Between the two positions on the clamping member A holding member moving mechanism that performs a backward movement, and a reciprocating movement between the third receiving position and the third delivery position, and the empty bag held by the holding member that has come to the second delivery position at the third receiving position. A second adsorbing member that adsorbs only the front surface in the supply direction, moves to the third delivery position and delivers the empty bag to the adjacent processing device, and causes the second adsorbing member to reciprocate between the two positions. An adsorption member moving mechanism is provided.

The empty bag supply device includes changing the suction surface of the second suction member from a substantially vertical state to a substantially horizontal state while the second suction member moves from the third receiving position to the third delivery position. . In this case, the empty bag is changed from a substantially vertical posture to a substantially horizontal posture.
In this case, it is desirable that there are a plurality of the second adsorbing members attached to one empty bag, and they are arranged one above the other so as to adsorb at least two places on the front surface in the supply direction of the empty bag. . In a typical example, while the second suction member moves from the third receiving position to the third delivery position, the suction surface of the second suction member is changed from a substantially vertical state to a downward substantially horizontal state. Thereby, the direction of the bag mouth side and the bag bottom side of the empty bag is reversed from that in the bag supply magazine.

  The empty bag supply device is further installed at a position below the second delivery position of the holding member, and has come to a retracted position and a third receiving position to avoid interference between the holding member and the empty bag held by the holding member. A suction assisting member that reciprocates between suction assisting positions facing the suction surface of the second suction member may be included. In this case, the suction assisting member is opposed to the suction surface of the second suction member at the third receiving position at the suction assisting position, and is held by the clamping member at the second delivery position. It arrange | positions so that the supply surface rear side may be supported.

  Furthermore, in the above-described empty bag supply device, one of the holding pieces of the holding member (the holding piece located on the rear side in the supply direction of the empty bag when the holding member comes to the second delivery position) is at the third receiving position. An extension portion facing the suction surface of the second suction member can be formed, and when the clamping member comes to the second delivery position, the extension portion can support the rear side in the supply direction of the empty bag.

According to the present invention, when the uppermost empty bag is taken out from the bag supply magazine by the first suction member, even if a plurality of sheets are picked up, the empty bag is held by the holding member, and the substantially horizontal posture is changed to the substantially vertical posture. In the process of transferring while converting into air, air flows between the empty bags and the contact state is resolved, and then the second adsorbing member adsorbs the empty bag surface (only in front of the empty bag supply direction) and holds the holding member. When the empty bag is released from the nipping, empty bags other than the empty bag actually adsorbed by the second adsorbing member (excess empty bags taken by a plurality of sheets) fall. Therefore, it is possible to prevent a plurality of sheets from being supplied.
Further, since the empty bag attracted and lifted from the bag supply magazine by the first adsorbing member is nipped and transferred by the holding member, the empty bag does not fall during the transfer, and the second adsorbing member does not drop the empty bag. The bag surface is adsorbed and the empty bag is released from the pinching of the holding member and immediately falls, so there is no hindrance to taking out the empty bag from the bag supply magazine, and stable bag supply is possible. The falling empty bag falls to a fixed position.

Hereinafter, the present invention will be described more specifically with reference to FIGS.
First, FIG. 1 is an example in which an empty bag supply device according to the present invention is applied to a rotary spout-equipped bag manufacturing device.
In the spouted bag manufacturing apparatus 1, a plurality of bag support members 3 (see FIGS. 2 and 3) are installed around a table 2 that rotates intermittently, and the bag upper edge 4a opens while the table 2 rotates once. The shoulder 4b is obliquely cut and supplied to the bag 4 and is held horizontally on the bag support member 3. The spout 5 is inserted into the shoulder 4b and the spout 5 is welded to the shoulder 4b. And the bag 6 with a diagonal spout is manufactured (refer patent document 4). The rotary spout-equipped bag manufacturing apparatus 1 is a W-type in which bag-making operations are performed simultaneously on two bags, and two bag support members 3 are set at an equal angular interval. Has been.

  More specifically, the table 2 stops 10 times during one rotation, and each process for manufacturing the slanted spout-equipped bag 6 is sequentially performed at each stop position. At the stop position I, a conveyor magazine type bag feeder 7 (only the tip of the conveyor magazine 7a is shown) is arranged, and two bags 4 are placed on the bag support member 3 via the empty bag feeder 8 according to the present invention. (Conveyor magazine type bag supply device 7 and empty bag supply device 8 are also W-shaped). In the conveyor magazine type bag feeder 7, the empty bags are stacked on the conveyor magazine 7a while being shifted in the vertical direction so that the upper bag comes to the front side with the bag mouth facing forward, and sent forward in a substantially horizontal posture. Then, the top end of the uppermost bag comes into contact with the stopper 9 (see FIG. 2) and is positioned. The bags 4 positioned on the conveyor magazine 7a are supplied by the empty bag supply device 8 in a substantially horizontal posture on the bag support member 3 by reversing the directions of the bag mouth side and the bag bottom side.

As shown in FIGS. 2 and 3, corresponding to each bag support member 3, bag holding members (movable member 11 and receiving member 12) are installed up and down across the support surface 3 a. The movable member 11 is installed on the table 2 so as to be able to swing up and down, the receiving member 12 is installed on the bag support member 3, has clamping portions 11 a and 12 a at the radial ends, and the bag 4 is placed on the support surface 3 a. Then, the air cylinder 14 is actuated, the movable member 11 swings downward, the clamping part 11a is lowered, and the vicinity of the upper edge 4a of the bag 4 is clamped with the clamping part 12a of the receiving member 12 To do. Each bag support member 3 is swingably supported by the table 2 in a vertical plane parallel to the radial direction of the table 2 and can be tilted by the air cylinder 15.
A bag positioning device 16 is disposed at the stop position II, whereby the bag 4 is positioned on the bag support portion 3. At this time, the movable member 11 is lifted to temporarily open the bag 4, and is lowered after positioning to pinch the bag 4 again, and the bag 4 is held substantially in a fixed position on the bag support portion 3.

Spout supply devices 17 and 18 and a bag mouth opening device (not shown) are arranged at the stop position III, whereby the opening of the shoulder 4b and the supply of the spout 5 (insertion into the shoulder 4b) are performed. Corresponding to each bag support member 3, a spout holding member 19 that can be opened and closed on the table 2 is installed on the table 2, and the spout 5 inserted in the shoulder 4 b is held by the spout holding member 19 in a fixed position. To do.
Sealing devices (only hot plates 21, 22, and 23 are shown) are arranged at the stop positions IV to VI, and cooling devices (only the cooling plate 24 are shown) are arranged at the stop position VII, and the shoulder 4b of the bag 4 and the spout are arranged. 5 welding seal and cooling are performed.
An inspection device 25 for inspecting the attachment position of the spout 5 is disposed at the stop position VIII. When it is determined that the attachment is defective upon receipt of the inspection signal, the air cylinder 15 is activated during the rotation of the table 2, and the bag support member 3 tilts outward and downward to discharge the defective bag.
At the stop position IX, the bag 6 with an oblique spout is taken out by a bag delivery device (not shown) and transferred toward a bag filling and packaging device (not shown).

The empty bag supply device 8 receives a bag 4 from the conveyor magazine 7a, receives the bag 4 from the empty bag take-out means, transfers the bag 4 along an arcuate path, and changes it to a substantially vertical posture. It consists of a bag transfer means and a second empty bag transfer means that receives and transfers the bag 4 from the first empty bag transfer means and places it on the bag support portion 3 of the spouted bag manufacturing apparatus 1 after changing to a horizontal posture.
The empty bag taking-out means is reciprocated between the first adsorbing member 26 that reciprocates between a first receiving position below and a first delivery position that is set above the first adsorbing member 26, and between the two positions. A first adsorbing member moving mechanism 27 is provided. In FIG. 2, the first suction member 26 is drawn with a solid line at the first receiving position, with a virtual line at the first delivery position, and its movement path is drawn with a double arrow. As a part of the first suction member moving mechanism 27, a lever 28 that supports the first suction member 26 and a shaft 29 to which the lever 28 is fixed are shown. Needless to say, the first adsorbing member 26 communicates with a switching valve and a vacuum source (not shown) through vacuum piping.
The first suction member 26 sucks the upper surface near the front end in the supply direction of the empty bag 4 in the conveyor magazine 7a positioned in contact with the stopper 9 with the suction surface facing substantially horizontally downward at the first receiving position. Subsequently, it moves upward while swinging backward (backward in the supply direction of the empty bag 4) and moves to the first delivery position, lifting the adsorbed empty bag 4 and causing the front end portion. Two first adsorbing members 26 (a pair of left and right) are installed per one empty bag (see adsorbing part A in FIG. 5).

The first empty bag transfer means is sandwiched to reciprocate between a lower second receiving position and a second delivery position that rises in an arc from the lower second receiving position to the upper front side (the front side in the supply direction of the empty bag 4). A member 31 and a sandwiching member moving mechanism 32 that causes the sandwiching member 31 to reciprocate between the two positions are provided. In FIG. 2, the clamping member 31 is drawn with an imaginary line at the second receiving position and with a solid line at the second delivery position, and a substantially arcuate movement path is drawn with a double-headed arrow.
As shown in FIG. 3, the holding member 31 has two holding pieces 33 and 34 having a width (horizontal width) that can hold the two bags 4 at the same time. As shown in FIG. 5, the holding piece 34 located on the rear side in the supply direction of the empty bag 4 has an extension 34 a that extends in a tongue-like shape at a position corresponding to the widthwise center of the bag 4. The sandwiching piece 34 is fixed to a swing lever 35 described later, and the sandwiching piece 33 is pivotally supported by the swing lever 35 in a vertical plane along the supply direction of the bag 4, and is similarly attached to the swing lever 35. The air cylinder 36 is opened and closed by the operation.

  The holding member moving mechanism includes the swing lever 35, a fulcrum shaft 37 rotatably supported on the box frame 30, one end fixed to the fulcrum shaft 37, and the other end at an intermediate position of the swing lever 35. A swing arm 38 rotatably connected to the fixed shaft portion 40, a link 41 connecting the rear end of the swing lever 35 and the link support member 39 installed on the box frame 30, and one end as a fulcrum The elevator 37 is fixed to the shaft 37, and the other end is connected to a drive source (not shown) via a connecting member 42 and swings up and down (see FIG. 4). As the elevating lever 43 swings up and down, the swinging arm 38 swings in a vertical plane along the supply direction of the bag 4, and the swinging lever 35 swings along a substantially arcuate path, and the clamping member 31 reciprocates between the second receiving position and the second delivery position along the movement path.

As the lifting lever 43 swings, the clamping member 31 descends with the clamping pieces 33 and 34 opened, and closes at the second receiving position, whereby the first suction member comes to the first delivery position. The front end portion of the bag 4 caused by the belt 26 is clamped over the entire width, and then the first suction member 26 is released to the atmosphere and the bag 4 is lifted after being released from the first suction member 26, and then moved to the second delivery position. During the upward movement, the holding surface is changed from the substantially horizontal state to the substantially vertical state, and the empty bag 4 held when the second delivery position is reached is suspended in a substantially vertical posture.
As shown in FIG. 5, the suction site A of the first suction member 26 is set on both sides of the extension 34 a of the sandwiching piece 34. Therefore, the clamping member 31 and the first suction member 26 that have come to the second receiving position do not interfere with each other.

The second empty bag transfer means has two second reciprocating movements between an upper third receiving position and a third delivery position descending downward from the third receiving position (front side in the supply direction of the empty bag 4). 2 adsorption members 44, 45 and a second adsorption member moving mechanism 46 for causing the second adsorption members 44, 45 to reciprocate between the two positions. In FIG. 2, the second suction members 44 and 45 are drawn with solid lines at the third receiving position and with virtual lines at the third delivery position. Since this bag supply device 8 is W-shaped, two sets of second suction members 44 and 45 are installed for each bag 4 in total.
The second suction members 44 and 45 (the second suction member 44 is located on the upper side in the third receiving position and the second suction member 45 is located on the lower side) are connected by a conduit 47 having a predetermined length, A conduit 48 of the second adsorbing member 44 is fixed to a mounting stay 49 described later, and further communicated with a switching valve and a vacuum source (not shown) through a vacuum pipe 51.

  The second adsorption member moving mechanism 46 has a fulcrum shaft 52 whose one end is pivotally supported by the box frame 30 so as to be horizontally rotatable, a swing arm 53 whose one end is fixed to the fulcrum shaft 52, and a base 49a swings. The mounting stay 49 that is pivotally supported by the shaft 53a at the other end of the arm 53 and extends horizontally, the shaft 54 that is fixed to the base 49a of the mounting stay 49, and the shaft 54 are slidable. A guide block 55 to be supported, a support member 56 that is fixed to the support member 56 installed in the box frame 30, a bearing member 58 that rotatably supports the shaft portion 57 of the guide block 55, one end is fixed to the fulcrum shaft 52, and others The end includes a lift lever 61 that is connected to a drive source (not shown) via a connecting member 59 and swings up and down (see FIG. 4). As the elevating lever 61 swings up and down, the swing arm 53 swings in the vertical plane along the supply direction of the bag 4, and similarly the mounting stay 49 swings up and down (see the double arrow in FIG. 2). ). Further, as the mounting stay 49 swings from above to below, as shown by the solid line and the phantom line in FIG. 2, the mounting stay 49 is opposite to the supply direction of the bag 4 around the shaft 53 a of the swing arm 53 ( Rotate approximately 180 ° (rightward rotation in FIG. 2). Eventually, the mounting stay 49 rotates approximately 90 ° in the forward direction with respect to the supply direction accompanying the swing of the swing arm 53 and rotates approximately 180 ° in the reverse direction around the shaft 53a of the swing arm 53. Are rotated approximately 90 ° in the opposite direction to the supply direction.

The second suction members 44 and 45 are disposed so as to be positioned vertically at the third receiving position, and the suction surface faces substantially vertically rearward (backward in the supply direction of the bag 4), and is at the second delivery position. The front surface of the bag 4 (front surface in the direction of supply of the bag 4) that is sandwiched between the holding members 31 and takes a substantially vertical position is located at two upper and lower positions in the center in the width direction. (Refer to adsorption sites B1 and B2 in FIG. 5). Subsequently, after the pinching member 31 is opened and the bag 4 is released from the pinching member 31, the second suction members 44 and 45 have the swing arm 53 swing and the mounting stay 49 swings downward and forward. Accordingly, the suction surface is turned downward when it swings downward and forward toward the third delivery position and rotates around the shaft 53a of the swing arm 53 to reach the third delivery position. As a result, the bag 4 is changed from a substantially vertical posture to a substantially horizontal posture.
In the third delivery position, the bag 4 is placed on the bag support member 3 of the spouted bag manufacturing apparatus 1 (see the virtual destination in FIG. 2), and the movable member 11 is lowered to the bag 4 between the receiving member 12. The second adsorbing members 44 and 45 are released to the atmosphere to release the bag 4 and then move upward toward the third receiving position.
In addition, by adsorbing the upper and lower portions of the bag 4 with the second adsorbing members 44 and 45, the posture of the bag 4 can be stably held even when the adsorbing members 44 and 45 rotate during the transfer as described above. I can leave.

Further, the empty bag supply device 8 includes two suction assisting means in order to surely perform the suction by the second suction members 44 and 45.
One is a suction assisting means for the second suction member 44 located on the upper side in the third receiving position, and this is an extension formed on the sandwiching piece 34 on the rear side when the sandwiching member 31 comes to the second delivery position. Part 34a. When the second adsorbing member 44 adsorbs the front side of the bag 4 held between the holding members 31 in a substantially vertical position at the third receiving position (see the adsorbing part B1 in FIG. 5), the extension 34a is the second one. The rear surface side of the bag 4 is supported facing the suction surface of the suction member 44. Thereby, the suction of the bag 4 by the second suction member 44 is reliably performed.

The other is for the second suction member 45 located on the lower side in the third receiving position, and is a suction assisting means 62 installed at a position below the second delivery position of the clamping member 31. The suction assisting means 62 includes a plate-shaped suction assisting member 63 that reciprocates between a substantially horizontal retracted position and a substantially vertical suction assisting position, and the suction assisting member 63 reciprocates between the two positions. A suction assisting member moving mechanism 64 is provided (see FIG. 4). In FIG. 2, the suction assisting member 63 is drawn with a virtual line at the retracted position and with a solid line at the suction assisting position, and its movement (swinging) path is drawn with a double arrow. Since the bag supply device 8 is W-shaped, two suction assisting members 63 are also installed in parallel.
As shown in FIG. 4, the suction assisting member moving mechanism 64 has a fulcrum shaft 65 (two suction assisting members 63 are fixed) rotatably supported on the box frame 30 and one end fixed to the fulcrum shaft 65. The other end is connected to a drive source (not shown) via a connecting member 66 and is composed of a lifting lever 67 that swings up and down. As the elevating lever 67 swings up and down, the fulcrum shaft 65 rotates and the suction assisting member 63 swings and moves between the retracted position and the suction assisting position.

  The suction assisting member 63 avoids the interference between the sandwiching member 31 and the bag 4 sandwiched by the sandwiching member 31 at the retracted position, and after the sandwiching member 31 passes over and reaches the second delivery position, the suction assisting member 63 Move to position. When the second suction member 45 is sandwiched between the sandwiching members 31 and sucks the front side of the bag 4 in a substantially vertical posture (see the suction site B2 in FIG. 5), The rear surface side of the bag 4 is supported facing the suction surface of the suction member 45. Thereby, the adsorption | suction of the bag 4 by the 2nd adsorption | suction member 45 is performed reliably.

In the empty bag supply device 8 described above, when the uppermost bag 4 is taken out from the conveyor magazine 7a by the first suction member 26, even if a plurality of sheets are picked up, the whole bag is held by the holding member 31 and transferred. Therefore, excess bags do not fall during the transfer, and for example, they do not fall on the conveyor magazine 7a and do not hinder the next removal of the bags 4 from the conveyor magazine type bag feeder 7.
Even when a plurality of sheets are picked up, the bag is clamped by the clamping member 31, and in the process of being transferred while being converted from a substantially horizontal posture to a substantially vertical posture, air flows between the bags and the tight contact state is eliminated. Then, when the front side of the bag is adsorbed by the second adsorbing members 44 and 45 and the bag is released from the nipping of the holding member 31, only the bag actually adsorbed by the second adsorbing members 44 and 45 is held as it is. However, bags that are not adsorbed (extra empty bags that have been removed) drop on the spot. Accordingly, it is possible to prevent a plurality of sheets from being supplied to the spouted bag manufacturing apparatus 1 as it is (multiple sheet supply), the bag dropping position is constant, and an excess bag is manufactured from the spouted bag. It can also prevent falling on the table 2 or the bag support member 3 of the apparatus 1.

The empty bag supply device 8 is merely an example of the present invention, and the following modifications are possible within the scope of the present invention.
(1) In the above example, the second suction members 44 and 45 suck the substantially vertical bag 4 in the third receiving position with the suction surface facing the substantially vertical rear side to the third delivery position. In the course of heading, the suction surface is rotated approximately 90 ° in the opposite direction to the supply direction, and the suction surface is set in a substantially horizontal state in the third delivery position. For example, the mounting stay 49 is fixed to the swing arm 53. Thus, only the forward rotation of approximately 90 ° associated with the swing of the swing arm 53 is caused to occur on the suction surface, and the bag is placed on the bag support member with the suction surface in the substantially horizontal state at the third delivery position. You can also. However, in this case, the reverse of the direction of the bag mouth side and the bag fixed side of the bag 4 does not occur between the conveyor magazine 7a and the bag support member 3. Further, it is necessary to prevent interference between the bag support member and the second adsorption member.

(2) In the above example, in order to stabilize the posture of the bag 4 while the second suction members 44 and 45 move from the third receiving position to the third delivery position, the two second suction members 44 and 45 are used. Although the two upper and lower portions of the bag 4 are adsorbed by use, only one location may be adsorbed or three or more locations may be adsorbed as necessary.
(3) In the above example, the bag 4 is changed from the substantially vertical posture to the substantially horizontal posture while the second suction members 44 and 45 move from the third receiving position to the third delivery position. This is because the bag 4 is supplied in a horizontal posture to the spouted bag manufacturing apparatus 1 which is a supply destination. However, there is a case where the bag is supplied in a substantially vertical posture, for example, as in a case where the bag is supplied to a pair of grippers of a normal rotary type bag filling and packaging machine. In this case, the second suction member may simply move horizontally, for example, from the third receiving position to the third delivery position while maintaining the substantially vertical posture of the bag 4.

(4) In the above example, the second adsorbing member 44 is assigned to the extension 34a of the holding piece 34 of the holding member 31 and the second adsorbing member 45 is assigned to the adsorbing auxiliary member 63 for adsorbing assistance. However, for example, when the suction location is one location above, the suction assisting member can be omitted. Or you may eliminate the said extension part and install only an adsorption | suction auxiliary member.

It is a top view which shows an example of application of the empty bag supply apparatus which concerns on this invention. It is a side view of the empty bag supply apparatus which concerns on this invention. It is also a plan view. FIG. 4 is a cross-sectional plan view taken along the line IV-IV in FIG. It is a figure which shows the relationship between the shape of the clamping piece of a clamping member, and the adsorption | suction location by an adsorption member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bag manufacturing apparatus with a spout 2 Table 3 Bag support member 4 Bag 7a Conveyor magazine 8 Empty bag supply apparatus 11, 12 Bag holding member 26 First adsorption member 27 First adsorption member moving mechanism 31 Nipping member 32 Nipping member movement mechanism 33, 34 Nipping piece 34a Extension part 44, 45 2nd adsorption member 46 2nd adsorption member moving mechanism 63 Adsorption auxiliary member 64 Adsorption auxiliary member moving mechanism

Claims (10)

After the upper surface of the uppermost empty bag in the bag supply magazine near the front end in the supply direction is adsorbed by the first adsorbing member, the first adsorbing member is moved upward to lift the empty bag, and the lifted empty bag The vicinity of the front end is clamped by a clamping member, the clamping member is moved to move the empty bag to a predetermined position, and is changed to a substantially vertical posture, and only the front surface of the empty bag in the substantially vertical posture is supplied in the second suction member. After sucking in, the second suction member is moved, the empty bag is transferred to a predetermined position, and delivered to an adjacent processing apparatus. The empty bag supply method according to claim 1, wherein the empty bag is transferred to a predetermined position by moving the second suction member, and is changed to a substantially horizontal posture and delivered to the processing apparatus. 3. The method according to claim 2, wherein a plurality of the second adsorption members are attached to one empty bag, and at least two upper and lower portions of the front surface in the supply direction of the empty bag are adsorbed by the second adsorption member. Empty bag supply method. The empty bag is placed in the bag supply magazine with the bag mouth side or the bag bottom side facing the supply direction, and when the empty bag is changed to a substantially horizontal posture, the lower side of the empty bag that is in a substantially vertical posture is 4. The empty bag supply method according to claim 3, wherein the direction toward the front side of the supply direction is set to reverse the direction of the bag mouth side and the bag bottom side of the empty bag with respect to the inside of the bag supply magazine. Reciprocating between a lower first receiving position and a first delivery position set above the first receiving position, adsorbing the upper surface near the front end in the supply direction of the uppermost empty bag in the bag supply magazine at the first receiving position, A first adsorbing member that lifts the adsorbed empty bag at the one delivery position; a first adsorbing member moving mechanism that causes the first adsorbing member to reciprocate between the two positions; a second receiving position; The holding surface is changed from the substantially horizontal state to the substantially vertical state while moving back and forth between the two delivery positions and moving from the second delivery position to the second delivery position, and the first delivery position is reached at the second delivery position. A holding member that holds the vicinity of the front end of the empty bag adsorbed by the first adsorbing member and suspends the empty bag held when the second adsorbing position is reached in a substantially vertical position; Nipping member movement to reciprocate with A mechanism to move back and forth between a third receiving position and the third hand-over position, to adsorb only the supply direction toward the front of the empty bag which is clamped to the clamping member came to the second hand-over position in the third receiving position, A second suction member that arrives at the third delivery position and delivers the empty bag to the adjacent processing apparatus, and a second suction member moving mechanism that causes the second suction member to reciprocate between the two positions. Bag supply device. The second suction member moving mechanism changes the suction surface of the second suction member from a substantially vertical state to a substantially horizontal state while the second suction member moves from the third receiving position to the third delivery position. An empty bag supply device according to claim 5. The empty according to claim 6, wherein there are a plurality of the second adsorbing members per empty bag, and the upper and lower adsorbing members are arranged vertically to adsorb at least two upper and lower positions on the front surface in the supply direction of the empty bag. Bag supply device. The second suction member moving mechanism changes the suction surface of the second suction member from a substantially vertical state to a substantially horizontal state downward while the second suction member moves from the third receiving position to the third delivery position. The empty bag supply device according to claim 7. Further, the second adsorbing member that is installed at a position below the second delivery position of the clamping member and that comes to the retracted position and the third receiving position to avoid interference with the clamping member and the empty bag held by the clamping member. A suction assisting member that reciprocates between suction assisting positions facing the surface, and an adsorption assisting member moving mechanism that causes the suction assisting member to reciprocate between the two positions, wherein the suction assisting member includes the suction assisting position. And supporting the rear side in the supply direction of the empty bag held by the holding member coming to the second delivery position so as to face the suction surface of the second suction member coming to the third receiving position. The empty bag supply apparatus as described in any one of Claims 5-8. Of the sandwiching pieces of the sandwiching member, the extension part that faces the suction surface of the second suction member that is located on the rear side in the supply direction of the empty bag when the second delivery position is reached. The empty bag supply device according to claim 5, wherein the extension portion supports a rear surface side in the supply direction of the empty bag at the second delivery position.

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